Methods and devices for skin tightening

a skin tightening and skin technology, applied in the field of skin tightening methods and devices, can solve the problems of scarring, limiting applicability, invasiveness, inconvenient, inconvenient, etc., and achieve the effect of reducing skin laxity

Active Publication Date: 2015-12-24
CYTRELLIS BIOSYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015]In any embodiment described herein, the dressing is tunable without removal of a portion of the dressing (e.g., without removal of one or more layers of the dressing).
[0034]By “prophylactically treating” a disease, disorder, or condition in a subject is meant reducing the frequency of occurrence or severity of (e.g., preventing) a disease, disorder or condition by affixing a device (e.g., a dressing) to the subject prior to the appearance of a symptom of the disease, disorder, or condition.

Problems solved by technology

Many human health issues arise from the damage or loss of tissue due to disease, advanced age, and / or injury.
Conventional surgical therapies (e.g., a face lift, brow lift, or breast lift) can be effective but are often invasive, inconvenient, and expensive, while scarring limits its applicability.
Although minimally invasive methods are available, such methods are generally less effective than surgical methods.
Methods using energy sources (e.g., laser, non-coherent light, radiofrequency, or ultrasound) can be effective at improving the architecture and the texture of the skin but are much less effective at tightening the skin or reducing skin laxity.
Finally, dermal fillers, such as hyaluronic acid, are injected in the dermal layer to smooth out wrinkles and improve contours, but such fillers do not tighten or reduce laxity of the skin.

Method used

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  • Methods and devices for skin tightening
  • Methods and devices for skin tightening
  • Methods and devices for skin tightening

Examples

Experimental program
Comparison scheme
Effect test

example 1

Method of Treating Skin Regions

[0163]A skin region can be treated by any useful method prior to affixing a dressing. For example, this method can include forming a plurality of small holes is in the skin through the dermal and epidermal layer. Generally, the dimension of the holes is in the range of 50-500 μm in diameter. Without wishing to be limited by theory, it is envisioned that up to 40% of the treated skin surface can be removed and that the amount of removed skin determines the extent of the tightening effect. The holes can be formed surgically, for example, by using a hollow coring needle (e.g., any described herein). Alternative forms of energy, e.g., such as laser, non-coherent light, radio-frequency, or ultrasound, can also be used to form the holes. The holes can be circular or have any other preferred shape (e.g., an elongated shape). After the formation of such holes, the methods and devices (e.g., dressings) described herein (e.g., in the following Examples) can be e...

example 2

Exemplary Tunable Dressing Affixed to the Skin in a Tensionless State and then Activated to Compress the Skin (Method 1)

[0164]After treating the skin to form a plurality of holes in a skin portion, a tunable dressing can be used to compress the skin. In one embodiment, the dressing comprises an adhesive layer that is in contact with the skin and a tension-regulation layer (a regulatable layer) that is affixed to the adhesive layer. The tension-regulation layer allows adjustment of the dimension of the dressing in the plane of the dressing (e.g., parallel to the skin in the x-direction in FIG. 1 or in the y-direction (not shown in FIG. 1)). Other functional layers include those providing occlusion to control humidity and / or to promote moisture-enhanced wound healing, absorption of wound exudate, delivery of drugs, etc., which can be added to the dressing.

[0165]In particular embodiments, the dressing is applied on a treated skin area in a tensionless state. At that stage, the dressing...

example 3

Exemplary Tunable Dressing Including a Shape-Memory Alloy (Method 1)

[0169]The dressing can include any useful material in the regulatable layer. In one embodiment, the tension-regulation layer can integrate a shape-memory alloy (SMA) material in any useful form, e.g., in the form of wires. The SMA can be geometrically arranged, and its mechanical properties can be optimized to respond to particular changes in temperature. In one non-limiting embodiment, a network of SMA wires is arranged in the regulatable layer, e.g., a grid of SMA wires, as shown in FIG. 2.

[0170]Similar to the dressing in the above-described example, elevation of temperature can irreversibly alter the wound-dressing geometry, and the SMA can be programmed with another low temperature threshold below room temperature that reverts dimensional changes observed after exposure to temperature above the high temperature threshold. In this manner, a user can expand the dressing, for example, if the dressing is too tight a...

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PUM

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Abstract

The present invention relates to methods and devices for skin tightening after incising or excising tissue portions from a subject. Exemplary methods and devices include tunable dressings having an adhesive layer and a regulatable layer or an unstretched layer that responds to one or more external stimuli to contract or expand the dressing, where the contraction or expansion can be uniform or non-uniform.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims benefit of U.S. Provisional Application No. 61 / 766,937, filed Feb. 20, 2013, the contents of which are hereby incorporated by reference in their entirety.BACKGROUND OF THE INVENTION[0002]This invention relates to methods and devices for skin tightening or for treating diseases, disorders, and conditions that would benefit from skin restoration or tightening.[0003]Many human health issues arise from the damage or loss of tissue due to disease, advanced age, and / or injury. In aesthetic medicine, elimination of excess tissue and / or skin laxity is an important concern that affects more than 25% of the U.S. population. Conventional surgical therapies (e.g., a face lift, brow lift, or breast lift) can be effective but are often invasive, inconvenient, and expensive, while scarring limits its applicability.[0004]Although minimally invasive methods are available, such methods are generally less effective than surgical meth...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F13/02A61B17/3205A61B17/3209A61M35/00
CPCA61F13/0246A61M35/00A61F2013/0028A61B17/32093A61B17/3205A61F13/0233A61B2017/00761
Inventor LEVINSON, DOUGLASSTONE, DAVIDGINGGEN, ALEC
Owner CYTRELLIS BIOSYST
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